Oil lantern



FIG. 1 is a perspective view of the oil lantern according to the present invention, with the broken line showing for illustrative purposes only and forming no part of the claimed design;

FIG. 2 is a top view of the oil lantern according to the present invention.

FIG. 3 is a right side view of the oil lantern according to the present invention.

FIG. 4 is a front view of the oil lantern according to the present invention.

FIG. 5 is a rear view of the oil lantern according to the present invention.

FIG. 6 is a left side view of the oil lantern according to the present invention; and,

FIG. 7 is a bottom view of the oil lantern according to the present invention. 

The ornamental design for an oil lantern, as shown and described. 